Al-Kahf 18:103

<h2>The Greatest Losers in respect of (Their) Deeds</h2><p>Al-Bukhari recorded from `Amr that Mus`ab who said: "I asked my father -- meaning Sa`d bin Abi Waqqas -- about Allah's saying,</p><p>قُلْ هَلْ نُنَبِّئُكُم بِالاٌّخْسَرِينَ أَعْمَـلاً</p><p>(Say: "Shall We tell you the greatest losers in respect of (their) deeds") `Are they the Haruriyyah' He said, `No, they are the Jews and Christians. As for the Jews, they disbelieved in Muhammad ﷺ, and as for the Christians, they disbelieved in Paradise and said that there is no food or drink there, and the Haruriyyah are those who break Allah's covenant after ratifying it.' Sa`d used to call them Al-Fasiqin (the corrupt). `Ali bin Abi Talib, Ad-Dahhak and others said: "They are the Haruriyyah," so this means, that according to `Ali, may Allah be pleased with him, this Ayah includes the Haruriyyah just as it includes the Jews, the Christians and others. This does not mean that the Ayah was revealed concerning any of these groups in particular; it is more general than that, because the Ayah was revealed in Makkah, before the Qur'an addressed the Jews and Christians, and before the Khawarij existed at all. So the Ayah is general and refers to everyone who …

Say: Shall We inform you who will be the greatest losers by their works?

Say: "Shall we tell you of those who lose most in respect of their deeds?-

Say (O Muhammad SAW): "Shall We tell you the greatest losers in respect of (their) deeds?

Say, “Shall We inform you of the greatest losers in their works?”